CURRENT ELECTRICITY Characteristics of Current Electricity.

Slides:

Advertisements

Similar presentations

Electric Current: Basics. Current Electricity Current electricity is like current in a river. A high or fast river current means the water is rushing.

Advertisements

In Series and Parallel Circuits:. Pearson Investigating Science Potential Difference = Voltage At each point in a circuit where the electrons need.

Electricity Foundations of Physics. Electricity The movement of charge from one place to another Requires energy to move the charge Also requires conductors.

Current and Resistance

Current Electricity.

Electricity and Electrical Circuits. Chapter Sections O 1 - Electrical Circuits O 2 - Current and Voltage O 3 - Resistance and Ohm’s Law.

Circuits & Electronics

Circuits Electric Circuit: a closed path along which charged particles move Electric Current: the rate at which a charge passes a given point in a circuit.

Electrical Energy - Moving electrons in a path is electricity

energypushingDef : the energy or pushing force available to move electrons through a circuit Unit: volt (V) Symbol: V Measured using an instrument called.

CHAPTER 7 ELECTRICITY BINGO. A circuit in which current has more than one path is called a _________________ circuit.

Do Now What work is required to move 7 coulombs of charge through a potential difference of 3 volts?

Circuits, Volts, Amps, and Resistance. Series circuits Simple circuits that have only one path for the current to flow are called series circuits.

Electric Current Electrical current is the flow of electrons. Unlike static electricity, charges are in motion. Two types of Current I. Direct current.

Circuit A complete path of conductors from the

Measurements in Electric Circuits Gr. 9 Electricity Unit.

10.7 Cells in Series and Parallel (page 310). A “dry cell” is another term for a battery. Dry cells can be put together in two ways to change the energy.

 Electricity is caused by the flow (or net movement) of Electrons  Electric Current – the rate that positive charges flow in a circuit › Actually a.

ELECTRIC CIRCUITS. I. Circuits A flow of electrons is called a current.  Symbol - I  Unit is Amperes or Amps (A)  I = q/t  Current is amount of charge.

Amps, Volts and Resistance (Ohm’s Law). Coulomb  Recall that one Coulomb has 6.25 X electrons.  If the current coming out of the outlet on the.

4.2.3B Electrical Power What About Watts?. Power Law Moving electrons (current) requires ENERGY How much energy gets used depends on: Strength of push.

Chapter 7 Electricity. What is Charge? Protons have a (+) charge Electrons have a (-) charge Charge (q) is measured in Coulombs The elementary charge.

Electricity. Conductors and Insulators Conductors are materials that allow electricity to flow easily Examples: metal, water, air and some chemicals Insulators.

Electric Circuit Charges in Motion OCHS Physics Ms. Henry.

“Introduction to Circuits”

Ohm’s Law Conductor A conductor is a material that current can pass through easily, like metals.

Electrical circuits. Intensity (I): Number of charges that flow past a given point every second. Measured in Amperes (A). Wires that carry the electrical.

Electric Current: Basics. Current Electricity Current electricity is like current in a river. A high or fast river current means the water is rushing.

Electricity Basics of electricity. Electricity Atoms – The smallest unit of each element Electrons – negatively charged particles in atoms Ions – charged.

 Electric Current- net movement of electric charges in a single direction ◦ Example- powering electronics.

1 Chapter 20 Review activity! Fun in B208!.  A. Unit of energy  B. Unit of charge  C. Unit of current  D. Unit of voltage. 2 What is a coulomb?

a path along which electrons flow must have no breaks in the path to work 2 types: –closed (no breaks) –open (break, causes the device to shut off - switch)

Electric Circuits. Electric Current – the movement or flow of electric charges from one place to another. Electric Circuit – a controlled path in which.

Ohm’s Law PSSA Requirement Unit 9 Honors Physics.

Electricity and Circuit. Types of Electricity Static Electricity – no motion of free charges Current Electricity – motion of free charges – Direct Current.

Electric Current Everything (water, heat, smells, …) flows from areas of high concentration to areas of lower concentration. Electricity is no different.

ELECTRICITY WITHIN A CIRCUIT Topic 2. Circuits Electric circuits provide a continuous pathway.

The flow of charged particles charged particles ; through a conducting metal.

Circuit Electricity. Electric Circuits The continuous flow of electrons in a circuit is called current electricity. Circuits involve… –Energy source,

11.2 Electric Circuits: Analogies and Characteristics (Pages )

Electric Current Electric current – The net movement of electric charges in a single direction through a wire or conductor. Voltage difference – The force.

Ohms Law, current electricity, series circuits

Electricity and Circuit

Introduction to circuits, Coulomb Law.

through a conducting metal

Electric Current: Basics

Electricity - Current.

Check your Understanding

Ch Electricity II. Electric Current (p ) Circuit

Potential Difference, Current and Resistance

Characteristics of Current Electricity

Electric Circuits (12.2).

Electricity 2 objectives.

Electric Circuits (12.2).

ELECTRICAL CIRCUIT BOARDS

Current Intensity and Voltage

Potential Difference, Current and Resistance

Series and parallel circuits

Current electricity.

ELECTRIC CIRCUITS.

Electrical Quantities

Ohm’s Law and Circuit Basics

Science 9 Electricity Review.

Electricity II. Electric Current Circuit Potential Difference Current

Voltage Difference The difference in electrical potential between two places. Unit of measure = V (volts) Voltage causes current to flow through an electric.

Current and Simple Circuits Voltage Resistance Safety

Electricity & Circuits

Electric Circuits.

Potential Difference, Current and Resistance

Presentation transcript:

CURRENT ELECTRICITY Characteristics of Current Electricity

Potential Difference aka VOLTAGE  The difference in electric potential between two points (the positive end and the negative end of a battery)  The greater the potential difference in a circuit, the greater the potential energy of each electron traveling through the circuit  Causes current to flow in a closed circuit  Can be measured using a voltmeter  Units: Volts (V)

How Electrons Transfer Energy in a Circuit  When a light switch is flipped you instantly get light because the electrons that are in the conducting wire “push” other electrons that are nearby, and they continue this motion, like a chain reaction

Electric Current aka AMPERES  Electric current measure the amount of electric charge that passes by a point in an electrical circuit each second  Can be measured using an ammeter  Units: Amperes (A)

Resistance  Resistance is how much a device/substance slows down the flow of electric current through it  Every substance resists the flow of electric current to a certain degree  When a substance resists the flow of electric current it converts the electrical energy into another form of energy, typically heat  Ex. An element on your stove, light bulb  Conductors have a low resistance, insulators have a high resistance (more resistance = less conductivity)  Can be measured using an ohmmeter  Units: Ohms ( Ω)

Resistance continued  Resistors are useful in circuits  Can control the current or voltage in a circuit because the amount of energy that the electric current has before it enters the resistor is greater than when it leaves because some of the energy is used as it PASSES THROUGH the resistor

TYPES OF CIRCUITS

Series Circuits  Electric circuit where all the parts of the circuit are put in line, one following the other  There is only one path for the electric current to travel along  At any place in the circuit the current is equal  The energy that the electric current has when it leaves the battery is completely consumed by the time it returns to the battery

Parallel Circuits  Electric circuit where the electricity has more than one path that it can follow  At any place in the circuit the potential difference is the same  The current is different in different places in the circuit, depending on the amount of resistance present (smaller resistance = greater current)